<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        div{
            width: 1024px;
            height: 683px;
            border: 1px solid red;
            border-radius: 10px;
            box-shadow: 0px 0px 10px 50px #ccc;
            outline: 2px solid black;
            /* width: 500px;
            height: 300px;
            background-color: beige;
            line-height: 300px;
            text-align: center;
            border: 4px red solid; */
            /* border-bottom-left-radius: 20px 30px; */
            /* border-top-left-radius:50%;
            border-top-right-radius:50%;
            border-bottom-left-radius:50%;
            border-bottom-right-radius:50%; */
            /* border-radius: 10px 20px 30px 40px; */
        }
        /* img {
            box-shadow: 2px 10px 5px 20px #ff0000;
            border-radius: 44px;
        } */
         input, textarea,select{
            outline:none
         }
    </style>
</head>
<body>
    <div>
        <!-- <img src="..\七 背景属性\SeanXiao.png" alt=""> -->
         <input type="text"><br><br>
         <textarea name="" id="">请输入</textarea><br><br>
         <select name="select">
            <option value="value1">Value 1</option>
            <option value="value2" selected>Value 2</option>
            <option value="value3">Value 3</option>
          </select>
    </div> 
   
</body>
</html>